This episode features the Dyatlov Pass incident, a mysterious event that occurred in the Ural Mountains in 1959, involves the unexplained deaths of nine experienced hikers. The group, led by Igor Dyatlov, set out on a trek but vanished, leaving behind a torn tent and footprints suggesting a panicked escape. The hikers were discovered in various locations, some buried under snow, and many exhibiting strange injuries, including skull fractures, broken ribs, and even a missing tongue. Despite numerous investigations and theories, including avalanches, infrasound, and secret military tests, the exact cause of the hikers' deaths remains unknown, leaving the incident shrouded in mystery. [WARNING] There are some elements in the episode that children ages 10-13 could find disturbing. Episode recommended for children aged 14-16